Typewriting machine



June 1, 1943. J, TOGGENBURGER 2,320,487

TYPEWRIT ING MACHINE Filed Dec. 31, 1940 2 Sheets-Sheet l ATTORNEY J1me 1943- J.- TOGGENBURGER 2,32

TYPEWRITING MACHINE Filed Dec. 31, 1940 2 Sheets-Sheet 2 ATTORNEY Patented June l, l$l3 STATES;

.-. V angst? FFEQE Underwood Elliott Fisher Company, New York, N. Y., a corporation of Delaware Application Becernber 31, wet, No. 372,634

13 Claims.

This invention relates to typewriters, and more particularly, to devices for individually adjusting carriage-arresting stops at the will of the operator, under control of m ving the carriage to the position at which a stop is desired to be active. Such devices are well known in the art for adjusting left and right margin stops and usually include means operatable at locations remote to the margin stops to unlock them selectively from the teeth of a rack bar for relocation therealong.

It is a major object of the invention to provide efi'lcient, reliably operating and economically manufactured devices for conveniently adjus carriage-arresting stops to diiierent positions.

t is a further object of the invention to pro.- vicle a simply-constructed, reliably-operating mechanism to selectively unlock any one of a plurality of carriage-arresting stops from a location remote to them.

Another object of the invention is to provide a bar, extending parallel with the carriage, which is operatable to unlock any one of a plurality of adjustable stops which are normally releasably locked in adjusted positions.

A further object of the invention is to provide means for releasing the carriage from the control of the carriage feeding mechanism and simultaneously unlocking selectively any one of a plurality of normally releasably locked carriage stops.

Many other objects and advantages of the invention will become apparent from a study of the accompanying drawings and the detailed description that follows.

The invention is shown and described in association with margin steps, but isequally useful to facilitate the setting of other kinds of stops such as, for example, tabulator stops.

In the accompanying drawings,

Figure 1 is a perspective view of a typewriter carriage, including, left and right margin stops and a device operatable to unlock either margin stop from a rack bar and to release the carriage from the control of the carriage escapement. Nearly the entire right-hand carriage end is broken away.

Figure 2 is a diagrammatic plan view illustrating a left and a right margin stop upon a supporting rack and a bar common to both these stops for selectively unlocking the stops for move ment by spring means against a counterstop.

Figure 3 is a sectional view of thei left-hand margin stop and the supporting rack taken along the line 3-3 of Figure 2.

Lil

Figure 4 is a transverse sectional view oi the carriage looking leftward from just inside the right-hand carriage end. The left-hand margin stop is shown unlocked from the supporting rack and the carriage is shown released from an escapement controlled pinion.

Figure 5 is similar to Figure 4 but shows the right-hand margin stop unlocked from the ma gin stop supporting rack.

Figure 6 is a transverse ectional view of the carriage, similar to Figure 4, showing the mechanism of the invention in normal position.

The invention is shown applied to an Underwood noiseless typewriter embodying a carriage iii guided for letter-feed and carriage-return movements on a frame I i, see Figure 6, by means of trackways l2, l3, respectively on the frame I I and the carriage it, and anti-friction elements l4 between the trackways. From the extreme ends of the trackway [3 rise left and right carriage ends to. A platen it, extends intermediate the carriage ends i5 and is revolvably supported therein. A usual carriage spring, not shown, tends to move the carriage in letter-feed direction, but is normally restrained from doing so, by a letter-feed escapement ll engaging an escapement wheel 13 which is keyed to a shaft 21 carrying a pinion 22 normally engaging a rack 23 on the carriage. The carriage rack 23 is pivotally mounted near the opposite carriage ends by members 2% pivoted upon brackets 25 rising upwardly from the carriage trackway IS. The escapement I! is normally in control of the carriage but permits the escapement wheel 18 to rotate stepwise in response to each typing operation to thereby cause the carriage to letter feed under the influence of the said carriage spring. Near each carriage end i5 is a carriage-release lever 25, each having a forwardly and upwardly eX- tending arm 26 ending in a finger piece 21 and a downwardly extending arm 28 connected by a horizontal link 3! to one of the rack pivoting members 23. Both levers 25 are concentrically pivoted, one on a stud 32 projecting inwardly from the left carriage end i5, and the other on a bracket 33 secured to the underside of a rectangularly' cross sectioned bar 34. The lever 25 near the right carriage end has an abutment 35 nor mally engaging the underside of the bar 34. A

spring 30 attached to the rear end of the right- 5 with the escapement controlled pinion 22 so that the escapement is then ineffective to control the position and movements of the carriage.

Supported upon the rear portions of the carriage ends l5 and extending therebetween is a rack bar 31 carrying left and right margin stops 38 and 4|, respectively. The rack bar 31 has pointed teeth 42 along a lower edge thereof and a slidable latching member 43 on each of the margin stops 38 and 4| releasably locks or detents the stops upon the rack, by entrance between the teeth, as seen in Figure 3. Each latching member 43 includes a. vertical stem 45 slidable in a slot 46 provided in its associated stop. The stems 45 are confined for vertical movement between the stop rack 31 and the base of the slot 46 and are headed by finger pieces or buttons 41. Springs 49 interposed between the buttons 41 and a countersunk portion of the stops 38 and 4| urge the latching members 43 upwardly so that a tooth portion 48 on each of the laching members is normally seated between two of the rack teeth 42. It follows, therefore, that each margin stop may be adjusted by depressing the associated button and moving the stop along the rack bar 31. The margin stops 38 and 4| are urged to move toward each other by means of a cable 5| attached to the margin stop 38 and extending 180 around a pulley 52 on the other margin stop 4|, onto a drum 53 which is urged by a spring 54 to revolve and keep the cable 5| under tension. The drum 53 is pivotally mounted on a bracket 55 secured to the rack bar 31 and extending rearwardly therefrom. The margin stops 38 and 4| are adapted to engage the usual counterstop 56 extending forwardly through an opening 60 in the usual frame post 51 of the Underwood noiseless machine. As is usual in the said Underwood machine, the counterstop 56 engages normally the right side of the opening 68 under the'tension of a spring, not shown, and is movable against the left side of the opening by the right-hand margin stop 4| as the latter approaches its margin-gaging position.

A single stop release bar 58, extending parallelly to the carriage and supported thereon, is differently operatable to release the margin stops 38 and 4| selectively for movement along their supporting rack 31, from a location remote to both said stops. More specifically this bar 58 is capable of being operated to engage and operate v the latching member 43 of either one of the margin stops. In the specific embodiment of the invention shown, the bar 58 has near each of the carriage ends l5, a downwardly extending leg 6|, each having a pivotal connection 62 with one of the carriage release levers 25. The latching members 43 extend forwardly from the tooth portions 48 to provide individually projecting abutments 63 that are staggered transversely of the carriage and are individually engageable by a straight lower edge 64 of the stop release bar 58. The leg 6| at the right end of the bar 58 extends below the pivotal connection 62 and has a lateral projection 65 normally resting, under the tension of a light spring 66, against a substantially vertical rear edge 61 of an arm 68 forming part of a manipulative member or control lever 1| operatable to release the righthand margin stop 4| from the rack 31. See Figures 1 and 6. The lateral projection 65, in resting against the rear edge 61 of the arm 68, locates normally the bar 58 in front of both the abutments 63 of the stop latching members 43 and the rear edge 61 is so located that, if the carriage release levers 25 are operated, the margin stop release bar 58 will descend idly in front of both the abutments 63. The control lever 1| is pivoted on a stud 12 extending inwardly from the right carriage end l5 and has a forwardly extending branch 13 normally abutting the margin stop rack 31 under the tension of a spring 14 that is slightly stronger than the spring 66 which tends to move the stop release bar 58 from normal position upon the carriage release levers 25. The lever 1| has a finger piece 15 whereby it can be operated to cause operation of the stop release bar 58 to effect release of the right-hand margin stop 4| as illustrated in Figure 5. Upon initial operation of the lever 1|, the edge 61 on the lever arm 68 moves forwardly and thereby causes the stop release bar 58 to swing forwardly under the tension of the spring 66 until a stiffening flange 16 on the bar 58 engages the front of the margin stop supporting bar 31, as seen in Figure 5. The lower edge 64 of the bar 58 is then directly over the abutment 63 associated with the right-hand margin stop 4|. Upon further operation of the lever 1|, a pin 11 on the lever arm 68 engages a rearwardly extending branch 18 of the right-hand carriage release lever 25 and operates the latter to thereby cause the margin release bar 58 to be drawn downwardly. In being drawn downwardly, the edge 64 of the stop release bar 58 engages and moves the underlying abutment 63, thereby releasing the latching member 43 of the stop 4| from engagement with the rack bar 31. Both abutments are preferably slightly notched, as shown, to eliminate the tendency of the bar slipping off the abutments during operation. Since the stop release bar 58 is operated through the carriage release levers 25, it follows that the carriage rack 23 will concomitantly be released from,the escapement controlled pinion 22. It should, at this point, be understood that both carriage release levers 25 are operated in unison through the connections established therebetween by the carriage feed rack 23 and the links 3| connecting the rack at opposite ends to the carriage release levers. In order to release or unlock the left margin stop 38 from its supporting rack 31, a manipulated member or control lever 8| is operated by a finger piece 82 as illustrated in Figure 4. The lever 8| has a forwardly extending branch 83 normally resting against the margin stop rack 31 under the tension of a very light spring 84. The lever 8|, when operated, first raises an arcuate stop finger 85 on its branch 83 behind a nose 86 on the bar 58. Almost simultaneously, the lever 8| picks up the control lever 1| through an car 81 on the lever 1| to permit the stop release bar 58 to swing forwardly under the tension of the spring 66. The forward swinging motion of the stop release bar 58 is, however, so limited by the raised arcuate finger that the bar 58 will swing to a position directly over the abutment 63 of the latching member 43 of the left margin stop 38. After the lower edge 64 of the bar 58 has been located as just explained, continued operation of the control lever 8| causes the pin 11 on the lever 1| to engage and operate the branch 18 of the right-hand carriage release lever. This results in the release of the carriage feed rack 23 from the pinion 22 and in the op eration of the release bar 58 to release the left margin stop 38. The operation of the lever 1|, and consequently, also the operation of the lever 8 I, is limited by engagement of its arm 68 against the underside of the bar 34.

As may be readily seen in Figure 6, the arcuate finger 85 of the'lever 8! is normally so located that the nose 36 on the stop release bar 58 can pass over it. Since, in the embodiment of the invention shown, the control lever H also becomes operated when the adjacent control lever 8| is operated, the operator may, for releasing the left margin stop 38, place his hand upon and operate both these levers. In this way, the lever H, although immediately adjacent, in no way interferes with the operation of the lever 8!. Conversely, the lever H can conveniently be operated by the operators right hand without also operating the lever 8!. The arrangement of the finger pieces 75, 32 in adjacence is advantageous because it allows the operator to use the same hand for releasing either of the margin stops.

Since both margin stops 3S and ii are constantly under the influence of the cable tensioning spring 5!, it follows that either of these stops, if not already located against the counterstop 56, will move against the latter when re-- leased by the selective operation of said levers H and 8 l. Furthermore, as the operation of either of the levers I! and Si releases the carriage from the control of the carriage feeding mechanism, it follows also that the carriage is movable upon operation of the levers to relocate whichever stop is released, the released stop remaining during carriage movement against the counterstop. When the carriage has been moved to the position in which a released stop is desired to function, the operated lever H or 8i is released and the carriage feed mecl'ianism consequently will regain its control over the carriage and the previously unlocked stop will become locked to its supporting bar 3'! in the desired new position. The adjustment of either of the margin stops 38 and 4! can, therefore, be ef cted by singly operating one of two levers and oving the carriage by the operated lever. This procedure is so convenient and simple that the operator is not liable to become confused.

It is, of course, to be understood that certain features of the invention may be used without others, and that various changes in the details and arrangement of parts may be made without departing from the scope of the invention.

What is claimed is:

1. In a typewriter, a transversely movable carriage, means normally controlling the position of the carriage, a plurality of carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in different positions of adjustment and in condition for individual release, a plurality of manipulative members, and means, operative in any position of the carriage, responsive to the selective operation of said manipulative members, adapted to act selectively on said detenting means to effect selective release of said stops and adapted to act concomitantl on the carriage-position controlling means to release the carriage from its controlling means.

2. In a typewriter, a transversely movable carriage, means normally controlling the position of the carriage, two carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in different positions of adjustment and in condition for individual release, manipulative means, and means, operative in any position of the carriage, responsive to the differential operation of said manipulative means, adapted to act selec tively on said detenting means to efiect selective release of said stops and adapted to act on said carriage-position controlling means to release the carriage from its controlling means.

3. In a typewriter, a transversely movable carriage, means normally controlling the position of the carriage, carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in dif ferent positions of adjustment and in condition for individual release, manipulative means at one end of the carriage, and means, operative in any position of the carriage, responsive to the differential operation of said manipulative means, adapted to act selectively on said detenting means to effect selective release of said stops and adapted to act on said carriage-position controlling means to release the carriage from its controlling means.

4. In a typewriter, a transver ely movable carriage, means normally controlling the position of the carriage, two carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in different positions of adjustment and in condition for individual release, manipulative means, means, operative in any position of the carriage, responsive to the differential operation of said manipulative means, adapted to act selectively on said detenting means toeffect selective release of said stops and adapted to act on said carriageposition controlling means to release the carriage from its controlling means, counterstop means, and means to cause engagement of 9. released stop with the counterstop means.

5. In a typewriter, a transversely movable carriage, means normally controlling the position of the carriage, two carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for etenting said stops in diiferent positions of'adjustment and in condition for individual release, two closely adjacent manipulative members arranged at one end of the carriage, means responsive to the selective operation of said manipulative members adapted to act selectively on said detenting means to eifect selective release of said stops and adapted to act upon said carriage-position controlling means to release the carriage from said controlling means, counterstop means, and spring means to cause engagement of a released stop with the counterstop means.

6. In a typewriter, a transversely movable carriage, means normally controlling the position of the carriage, a plurality of carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in different positions of adjustment and in condition for individual release, a plurality of manipulative members operable in the same direction on the carriage, and means, operative in any position of the carriage, responsive to the selective operation of said manipulative members, adapted to act selectively on said detenting means to effect selective release of said stops and adapted to act concomitantly on the carriage-position controlling means to release the carriage from its controlling means.

7. In a typewriter, a transversely movable carriage, means normally controlling the position of the carriage, two carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in different positions of adjustment and in condition for individual release, two closely adjacent manipulative members operable in the same direction on the carriage, means operative in any position of the carriage, responsive to the selective operation of said members, adapted to act selectively on said detenting means to effect selective release of said stops, counterstop means, and means to cause engagement of a released stop with the counterstop means.

8. In a typewriter, a transversely movable carriage, means normally controlling the position of the carriage, a plurality of carriage-arresting "stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops different positions of adjustment and in condition for selective release, means, ineluding a bar, differently operatable in any position of the carriage, adapted to act selectively on said stop-detenting means, to effect selective release of said stops, and adapted to act on said carriage-position controlling means to release the carriage from its position-control.

9. In a typewriter, a transversely movable carriage, means normally controlling the position of the carriage, a plurality of carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in different positions of adjustment and in condition for selective release, means, including key means and a bar, dinjerently operatable in any position of the carriage, adapted to act selectively on said stop-detenting means to effect selective release of said stops, and adapted to act on said carriage-position controlling means to release the carriage from its positioncontrol.

10. In a typewriter, a transversely movable carriage, moans normally controlling the position of the carriage, a plurality of carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in different positions of adjustment and in condition for selective release, means in cluding a pivoted bar extending in parallel with the direction of movement of said carriage, differently operatable in any position of the carriage, adapted to act selectively on said stop-detenting means to eiiect release of one or another of said stops, and adapted to act on said carriage-position controlling means to release the carriage from its position-control.

11. In a typewriter, a transversely movable carriage, a plurality of carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in difierent positions of adjustment and in condition for individual release, a bar disposed in parallel with the direction of movement of the carriage, adapted by movements through difierent paths transversely of its length, to act selectively on said stop detenting means to effect selective release of said stops, and means to render said bar selectively operable through said different paths.

12, In a typewriter, a transversely movable carriage, a plurality of carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in different positions of adjustment and in condition for individual release, and means diflerently operable to effect selective release of said stops, said last means including a bar disposed in parallel with the direction of movement of the carriage, adapted, by bodily movements through different paths, to act selectively on said stop-detenting means to eifect selective release of said stops, said differently operable means, whenever operated, acting on said carriage position controlling means to release the carriage from its controlling means.

13. In a typewriter, a transversely movable carriage, two carriage-arresting stops adjustable in parallel with the direction of movement of the carriage, means for detenting said stops in difierent positions of adjustment and in condition for individual release, two closely adjacent controls on the carriage, and means adapted to act selectively on said detenting means, responsive respectively to the operation of one or both of said controls to effect release of one or the other of said stops.

JOHN TOGGENBURGER. 

